参考文献
Snow, Roger John; Gao, Donghong A.; Goldberg, Daniel R.; Hammach, Abdelhakim; Kuzmich, Daniel; Morwick, Tina Marie; Moss, Neil; Prokopowicz III, Anthony S.; Selliah, Robert D.; Takahashi, Hidenori
Patent: US2002/119975 A1, 2002 ;
US 20020119975 A1